APK Interface Redesign Patch

I need an experienced Android engineer to dive into an existing APK, de-compile it, and apply a focused UI/UX refresh. The single most important change is removing the “unauthorised device” error that currently blocks users at launch... (Budget: ₹600 - ₹1500 INR, Jobs: Android, Android App Development, Android SDK, Android Studio, Graphic Design, Java, Kotlin, Mobile App Development)